|
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Greenland in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. |
| Completed |
2007-09-25 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Greenland in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. |
| Completed |
2007-09-25 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Loop of AMSR-E Daily Arctic
…
| Title |
Loop of AMSR-E Daily Arctic Sea Ice from Aug 2005 to Aug 2006 |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. Sea ice is almost always in motion, reacting to ocean currents and to winds. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor and independent of atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfalls. This animation of AMSR-E 89 GHz brightness temperature in the northern hemisphere during late 2005 and early 2006 clearly shows the dynamic motion of the ice as well as its seasonal expansion and contraction. This animation shows the seasonal advance and retreat of sea ice over the Arctic from 8/5/2005 through 8/4/2006. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures in the sea ice by showing warmer areas of ice in a deeper blue and colder areas of sea ice in a brighter white. The sea ice extent is defined by a three-day moving average of the AMSR-E 12.5 km sea ice concentration, showing as ice all areas having a sea ice concentration greater than 15%. |
| Completed |
2006-09-06 |
|
Global View of the Arctic an
…
| Title |
Global View of the Arctic and Antarctic on September 21, 2005 |
| Abstract |
In support of International Polar Year, this matching pair of images showing a global view of the Arctic and Antarctic were generated in poster-size resolution. Both images show the sea ice on September 21, 2005, the date at which the sea ice was at its minimum extent in the northern hemisphere. The color of the sea ice is derived from the AMSR-E 89 GHz brightness temperature while the extent of the sea ice was determined by the AMSR-E sea ice concentration. Over the continents, the terrain shows the average landcover for September, 2004. (See Blue Marble Next Generation) The global cloud cover shown was obtained from the original Blue Marble cloud data distributed in 2002. (See Blue Marble:Clouds) A matching star background is provided for each view. All images include transparency, allowing them to be composited on a background. |
| Completed |
2007-02-08 |
|
Global View of the Arctic an
…
| Title |
Global View of the Arctic and Antarctic on September 21, 2005 |
| Abstract |
In support of International Polar Year, this matching pair of images showing a global view of the Arctic and Antarctic were generated in poster-size resolution. Both images show the sea ice on September 21, 2005, the date at which the sea ice was at its minimum extent in the northern hemisphere. The color of the sea ice is derived from the AMSR-E 89 GHz brightness temperature while the extent of the sea ice was determined by the AMSR-E sea ice concentration. Over the continents, the terrain shows the average landcover for September, 2004. (See Blue Marble Next Generation) The global cloud cover shown was obtained from the original Blue Marble cloud data distributed in 2002. (See Blue Marble:Clouds) A matching star background is provided for each view. All images include transparency, allowing them to be composited on a background. |
| Completed |
2007-02-08 |
|
Global View of the Arctic an
…
| Title |
Global View of the Arctic and Antarctic on September 21, 2005 |
| Abstract |
In support of International Polar Year, this matching pair of images showing a global view of the Arctic and Antarctic were generated in poster-size resolution. Both images show the sea ice on September 21, 2005, the date at which the sea ice was at its minimum extent in the northern hemisphere. The color of the sea ice is derived from the AMSR-E 89 GHz brightness temperature while the extent of the sea ice was determined by the AMSR-E sea ice concentration. Over the continents, the terrain shows the average landcover for September, 2004. (See Blue Marble Next Generation) The global cloud cover shown was obtained from the original Blue Marble cloud data distributed in 2002. (See Blue Marble:Clouds) A matching star background is provided for each view. All images include transparency, allowing them to be composited on a background. |
| Completed |
2007-02-08 |
|
Global View of the Arctic an
…
| Title |
Global View of the Arctic and Antarctic on September 21, 2005 |
| Abstract |
In support of International Polar Year, this matching pair of images showing a global view of the Arctic and Antarctic were generated in poster-size resolution. Both images show the sea ice on September 21, 2005, the date at which the sea ice was at its minimum extent in the northern hemisphere. The color of the sea ice is derived from the AMSR-E 89 GHz brightness temperature while the extent of the sea ice was determined by the AMSR-E sea ice concentration. Over the continents, the terrain shows the average landcover for September, 2004. (See Blue Marble Next Generation) The global cloud cover shown was obtained from the original Blue Marble cloud data distributed in 2002. (See Blue Marble:Clouds) A matching star background is provided for each view. All images include transparency, allowing them to be composited on a background. |
| Completed |
2007-02-08 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Alaska in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. An image of the sea ice on September 14, 2007 is included below, along with a corresponding image from September 21, 2005 showing the previous minimum sea ice extent. |
| Completed |
2007-09-11 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Alaska in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. An image of the sea ice on September 14, 2007 is included below, along with a corresponding image from September 21, 2005 showing the previous minimum sea ice extent. |
| Completed |
2007-09-11 |
|
2007 Arctic Sea Ice from AMS
…
| Title |
2007 Arctic Sea Ice from AMSR-E with Alaska in Foreground |
| Abstract |
Sea ice is frozen seawater floating on the surface of the ocean. Some sea ice is semi-permanent, persisting from year to year, and some is seasonal, melting and refreezing from season to season. The sea ice cover reaches its minimum extent at the end of each summer and the remaining ice is called the perennial ice cover. The 2007 Arctic summer sea ice has reached the lowest extent of perennial ice cover on record - nearly 25% less than the previous low set in 2005. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979, at a rate of about 10% per decade. But the 2007 minimum, reached on September 14, is far below the previous record made in 2005 and is about 38% lower than the climatological average. Such a dramatic loss has implications for ecology, climate and industry. The AMSR-E instrument on the Aqua satellite acquires high resolution measurements of the 89 GHz brightness temperature near the poles. Because this is a passive microwave sensor which is not so sensitive to atmospheric effects, this sensor is able to observe the entire polar region every day, even through clouds and snowfall. This animation progresses at a rate of six frames per day from January 1, 2007 through the minimum extent which occurred on September 14, 2007. The false color of the sea ice, derived from the AMSR-E 6.25 km 89 GHz brightness temperature, highlights the fissures or divergence areas in the sea ice cover by warm brightness temperatures (in blue) while cold brightness temperatures, shown in brighter white, represent consolidated sea ice. The sea ice edge is defined by the 15% ice concentration contour in the three-day moving average of the AMSR-E 12.5 km sea ice concentration data while ice extent is the sum of all pixels with at least 15% ice. An image of the sea ice on September 14, 2007 is included below, along with a corresponding image from September 21, 2005 showing the previous minimum sea ice extent. |
| Completed |
2007-09-11 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #3 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #2 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
'Possible Effects of Climate
…
| Title |
'Possible Effects of Climate Warming on Selected Populations of Polar Bears in the Canadian Arctic' Overview Map |
| Abstract |
Map of the northern Canadian study area showing delineation of each polar bear population discussed in the paper titled 'Possible Effects of Climate Warming on Selected Populations of Polar Bears in the Canadian Arctic'. Sea ice concentration data shown is from June 2000. |
| Completed |
2006-08-31 |
|
'Possible Effects of Climate
…
| Title |
'Possible Effects of Climate Warming on Selected Populations of Polar Bears in the Canadian Arctic' Overview Map |
| Abstract |
Map of the northern Canadian study area showing delineation of each polar bear population discussed in the paper titled 'Possible Effects of Climate Warming on Selected Populations of Polar Bears in the Canadian Arctic'. Sea ice concentration data shown is from June 2000. |
| Completed |
2006-08-31 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #5 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
Chlorine Nitrate over the Ar
…
| Title |
Chlorine Nitrate over the Arctic from CLAES (2/12/93 - 3/16/93) |
| Abstract |
Key to understanding the chlorine chemistry in the polar stratosphere is the measurement of polar stratospheric clouds, chlorine monoxide, and the reservoir gas chlorine nitrate. Chlorine nitrate has been measured by the Cryogen Limb Array Etalon Spectrometer, CLAES. CLAES makes measurements by looking at infrared emission from cloud particles and trace gases. CLAES measurements help to show that the polar stratospheric clouds which form in the cold Arctic stratosphere have converted most of the chlorine nitrate into the radical chlorine monoxide. In 1992, UARS measurements showed conclusively that an an Arctic ozone hole is beginning to form. |
| Completed |
1999-04-09 |
|
Chlorine Nitrate from CLAES
…
| Title |
Chlorine Nitrate from CLAES and Chlorine Monoxide from MLS over the Arctic (2/12/93 - 3/10/93) |
| Abstract |
Key to understanding the chlorine chemistry in the polar stratosphere is the measurement of polar stratospheric clouds, chlorine monoxide, and the reservoir gas chlorine nitrate. Chlorine nitrate has been measured by CLAES and chlorine monoxide by MLS. The CLAES and MLS measurements together help to show that the polar stratospheric clouds which form in the cold Arctic stratosphere have converted most of the chlorine nitrate into the radical chlorine monoxide. In 1992, UARS measurements showed conclusively that an an Arctic ozone hole is beginning to form. |
| Completed |
1999-04-09 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #1 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #1 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #1 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #1 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #1 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
|
NASA Study Links 'Smog' to A
…
| Title |
NASA Study Links 'Smog' to Arctic Warming |
| Abstract |
In the first global assessment of the impact of ozone on climate warming, scientists at the NASA Goddard Institute for Space Studies (GISS), New York, evaluated how ozone in the lowest part of the atmosphere (the troposphere) changed temperatures over the past 100 years. Using the best available estimates of global emissions of gases that create ozone, the GISS computer model study reveals how much this single air pollutant and greenhouse gas has contributed to warming in specific regions of the world. Ozone was responsible for one-third to half of the observed warming trend in the Arctic during winter and spring, according to the new research. Ozone is transported from the industrialized countries in the Northern Hemisphere to the Arctic quite efficiently during these seasons. The findings will be published soon in the American Geophysical Union's Journal of Geophysical Research-Atmospheres. The impact of ozone air pollution on climate warming is difficult to pinpoint because, unlike other greenhouse gases such as carbon dioxide, ozone does not last long enough in the lower atmosphere to spread uniformly around the globe. Its warming impact is much more closely tied to the region it originated from. To capture this complex picture, the GISS scientists used a suite of three-dimensional computer models that starts with data on ozone sources and then tracks how ozone chemically evolved and moved around the world over the past century. The research was supported by NASA's Atmospheric Chemistry Modeling and Analysis Program. |
| Completed |
2006-02-15 |
|
Modeled Arctic Sea Ice Thick
…
| Title |
Modeled Arctic Sea Ice Thickness from 1940 through 2060: View #4 |
| Abstract |
Part of the ongoing research into polar ice trends encompasses evaluation from sophisticated computer models. At the Geophysical Fluid Dynamics Laboratory at Princeton University, run by NASA's sibling agency, NOAA, researchers modeled a 5,000 year period to see how polar ice might behave over time depending on several different variables. This visualization shows a 120-year slice of that complete model, essentially offering a research window on to experimental processes that require longer time frames than human lifetimes. According to the model shown here, projecting a period from 1940 to 2060, there is evidence to suggest human factors have had a measurable effect on Arctic ice decreases. |
| Completed |
2000-05-30 |
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